TY  - BOOK
AU  - Chowdhury, S.S. Roy
TI  - A Concise Textbook on Communication & Education Technology  
SN  - 9788193705506
U1  - 610.730711 
PY  - 2018///
CY  - Delhi 
PB  - Kumar publishing house
KW  - Communication & Education Technology
ER  -